CN220168012U - Engine local structure - Google Patents
Engine local structure Download PDFInfo
- Publication number
- CN220168012U CN220168012U CN202321460249.1U CN202321460249U CN220168012U CN 220168012 U CN220168012 U CN 220168012U CN 202321460249 U CN202321460249 U CN 202321460249U CN 220168012 U CN220168012 U CN 220168012U
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- CN
- China
- Prior art keywords
- cylinder block
- breather chamber
- crankcase ventilation
- inlet
- ventilation valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000009423 ventilation Methods 0.000 claims abstract description 52
- 210000002268 wool Anatomy 0.000 claims abstract description 26
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 22
- 239000000446 fuel Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model provides a partial structure of an engine, which can prevent oil from entering a positive crankcase ventilation valve through a ventilation chamber. The engine partial structure includes: a cylinder block; the blowby gas backflow channel is positioned in the cylinder body and is connected with the crankcase and the air inlet channel; the positive crankcase ventilation valve is arranged in the blowby gas return passage; a breather chamber mounted to a side wall of the cylinder block and constituting at least part of the blowby gas return passage; and a wool type impactor provided in the breather chamber, the cylinder block having a cylinder block inlet and a cylinder block outlet, the breather chamber having a breather chamber outlet corresponding to the cylinder block inlet and a breather chamber inlet corresponding to the cylinder block outlet, the positive crankcase ventilation valve being directly mounted to the cylinder block inlet, an inlet end of the positive crankcase ventilation valve protruding toward the breather chamber outlet and opening into the breather chamber, the wool type impactor being positioned corresponding to the inlet end of the positive crankcase ventilation valve.
Description
Technical Field
The present disclosure relates to a vehicle local structure, and more particularly, to an engine local structure.
Background
In recent years, research and development on fuel efficiency improvement contributing to energy efficiency is underway in order to ensure affordable, reliable, sustainable and advanced energy access to more people. However, in research and development on fuel efficiency improvement, a positive crankcase ventilation (Positive Crankcase Ventilation, PCV) valve is generally provided in a cylinder, and oil in a breather chamber easily enters the positive crankcase ventilation valve and flows into an intake system, possibly causing engine malfunction. Therefore, there is a need for an improved arrangement of ventilation chambers to overcome the above-mentioned problems.
Disclosure of Invention
The utility model provides a partial structure of an engine, which can prevent oil from entering a positive crankcase ventilation valve through a ventilation chamber.
The present utility model provides an engine partial structure, comprising: a cylinder block; the blowby gas backflow channel is positioned in the cylinder body and is connected with the crankcase and the air inlet channel; the positive crankcase ventilation valve is arranged in the blowby gas return passage; a breather chamber mounted to a side wall of the cylinder block and constituting at least part of the blowby gas return passage; and a wool type impactor provided in the breather chamber, the cylinder block having a cylinder block inlet and a cylinder block outlet, the breather chamber having a breather chamber outlet corresponding to the cylinder block inlet and a breather chamber inlet corresponding to the cylinder block outlet, the positive crankcase ventilation valve being directly mounted to the cylinder block inlet, an inlet end of the positive crankcase ventilation valve protruding toward the breather chamber outlet and opening into the breather chamber, the wool type impactor being positioned corresponding to the inlet end of the positive crankcase ventilation valve.
In an embodiment of the utility model, the inlet end of the positive crankcase ventilation valve is directed towards an inner wall of the breather chamber.
In an embodiment of the utility model, the positive crankcase ventilation valve is juxtaposed in a horizontal direction with the wool impactor.
In an embodiment of the utility model, the blow-by gas return passage comprises a labyrinth passage located on an upstream side of the wool impactor.
Based on the foregoing, in the engine partial structure of the present utility model, a wool type impactor is disposed within the breather chamber and adjacent the inlet end of the positive crankcase ventilation valve. Accordingly, the wool impactor may prevent oil from continuing to move toward the positive crankcase ventilation valve as the oil follows the gas along the breather chamber to the wool impactor. Thus, the engine partial structure of the present utility model prevents oil from entering the positive crankcase ventilation valve through the breather chamber.
In order to make the above features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a schematic cross-sectional view of a partial structure of an engine according to an embodiment of the present utility model;
FIG. 2 is a partial cross-sectional view of a partial structure of the engine of FIG. 1;
FIG. 3 is an enlarged partial view of a partial structure of the engine of FIG. 2;
fig. 4 is a side view of a partial structure of the engine of fig. 2.
Reference numerals illustrate:
100: an engine partial structure;
110: a cylinder head;
110a: a valve cavity;
115: an air inlet valve and an air outlet valve;
120: a cover;
130: a cylinder block;
130a: a cylinder block inlet;
130b cylinder block outlet;
140: a ventilation chamber;
140a: an outlet of the ventilation chamber;
140b: a plenum inlet;
1401: an inner wall;
150: a blow-by gas return passage;
1501: a labyrinth passage;
160: a positive crankcase ventilation valve;
160a inlet end;
170: an air intake passage;
180: a crankcase;
190: a wool type impactor;
f: and (3) airflow.
Detailed Description
Fig. 1 is a schematic sectional view of a partial structure of an engine according to an embodiment of the present utility model. Referring to fig. 1, an engine partial structure 100 of the present embodiment includes a cylinder head 110, an intake/exhaust valve 115, a head cover 120, a cylinder block 130, a breather chamber 140, a blow-by gas return channel 150, and a positive crankcase ventilation (Positive Crankcase Ventilation, PCV) valve 160.
Cylinder head 110 is connected to cylinder block 130 and has a valve chamber 110a, and intake and exhaust valves 115 are disposed in valve chamber 110a. A head cover 120 is mounted on the cylinder head 110 to cover the valve chamber 110a. A blow-by gas return passage 150 is located in the cylinder block 130. The breather chamber 140 is mounted to a side wall of the cylinder block 130 and constitutes at least part of the blowby gas return channel 150. The blow-by gas return passage 150 connects the air chamber 140, the crankcase 180, and the intake passage 170. Specifically, the blowby gas return passage 150 is formed at least partially in the breather chamber 140 to connect the intake passage 170 at an upper end portion of the breather chamber 140, and to connect the crankcase 180 at a lower end portion of the breather chamber 140, for example.
A positive crankcase ventilation valve 160 is mounted within the blow-by gas return passage 150. The manner in which the gases flow in the breather chamber 140, the blow-by gas return channel 150, the intake channel 170, and the crankcase 180 is known in the art and will not be described in detail herein. For clarity of the drawing, components within the crankcase 180 are omitted from fig. 1 and not shown. The manner in which the intake and exhaust valves 115 and components within the crankcase 180 function is known in the art and will not be described in detail herein.
Fig. 2 is a partial cross-sectional view of a partial structure of the engine of fig. 1. Referring to fig. 2, the engine partial structure 100 of the present embodiment further includes a wool type impactor (fleece impactor) 190, and the wool type impactor 190 is disposed in the breather chamber 140. The wool impactor 190 may, for example, comprise a wool-like structure to provide oil and gas separation of the airflow through the wool-like structure. The cylinder block 130 has a cylinder block inlet 130a and a cylinder block outlet 130b, and the breather chamber 140 has a breather chamber outlet 140a corresponding to the cylinder block inlet 130a and a breather chamber inlet 140b corresponding to the cylinder block outlet 130b, and the positive crankcase ventilation valve 160 is directly mounted to the cylinder block inlet 130a. Gas enters the breather chamber 140 from the cylinder block 130 through the cylinder block outlet 130b and breather chamber inlet 140b, and then returns to the cylinder block 130 through the positive crankcase ventilation valve 160, breather chamber outlet 140a, and cylinder block inlet 130a and flows toward the intake passage 170 (shown in fig. 1).
Fig. 3 is a partial enlarged view of a partial structure of the engine of fig. 2. Referring to fig. 2 and 3, in detail, the inlet end 160a of the positive crankcase ventilation valve 160 protrudes toward the breather chamber outlet 140a and is open to the breather chamber 140, and the position of the wool impactor 190 corresponds to the inlet end 160a of the positive crankcase ventilation valve 160. Accordingly, the wool impactor 190 may prevent oil from continuing to move toward the positive crankcase ventilation valve 160 as the oil reaches the wool impactor 190 along the breather chamber 140 with the gas. Thus, the engine partial structure 100 of the present embodiment may prevent oil from entering the positive crankcase ventilation valve 160 through the breather chamber 140.
In this embodiment, the inlet end 160a of the positive crankcase ventilation valve 160 is directed toward the inner wall 1401 of the breather chamber 140. The positive crankcase ventilation valve 160 is horizontally juxtaposed to the wool impactor 190. Accordingly, the positive crankcase ventilation valve 160 and the wool type impactor 190 are arranged in a compact manner, and the gas can be efficiently separated from the oil by the wool type impactor 190 before the gas reaches the positive crankcase ventilation valve 160, thereby avoiding the oil from reaching the positive crankcase ventilation valve 160. In addition, there is sufficient space between the inlet end 160a of the positive crankcase ventilation valve 160 and the inner wall 1401 of the breather chamber 140 to avoid oil from migrating along the inner wall 1401 to the inlet end 160a of the positive crankcase ventilation valve 160.
Fig. 4 is a side view of a partial structure of the engine of fig. 2. Referring to fig. 4, in the present embodiment, the blowby gas return passage 150 includes a labyrinth passage 1501, and the labyrinth passage 1501 is located on the upstream side of the wool type impactor 190. Accordingly, large droplets (oil) in the air flow F may be captured through the labyrinth passage 1501 first, and then small droplets (oil) in the air flow F may be captured through the wool impactor 190, to reliably perform oil-gas separation.
In summary, in the engine partial structure of the present utility model, the wool type impactor is disposed within the breather chamber and adjacent the inlet end of the positive crankcase ventilation valve. Accordingly, the wool impactor may prevent oil from continuing to move toward the positive crankcase ventilation valve as the oil follows the gas along the breather chamber to the wool impactor. Thus, the engine partial structure of the present utility model prevents oil from entering the positive crankcase ventilation valve through the breather chamber.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (4)
1. An engine partial structure, characterized by comprising:
a cylinder block;
the blowby gas backflow channel is positioned in the cylinder body and is connected with the crankcase and the air inlet channel;
the positive crankcase ventilation valve is arranged in the blowby gas return passage;
a breather chamber mounted to a side wall of the cylinder block and constituting at least part of the blowby gas return passage; and
a wool-type impactor arranged in the ventilation chamber,
the cylinder block having a cylinder block inlet and a cylinder block outlet, the breather chamber having a breather chamber outlet corresponding to the cylinder block inlet and a breather chamber inlet corresponding to the cylinder block outlet,
the positive crankcase ventilation valve is directly mounted to the cylinder block inlet,
the inlet end of the positive crankcase ventilation valve protrudes towards the outlet of the ventilation chamber and is opened in the ventilation chamber,
the wool impactor position corresponds to the inlet end of the positive crankcase ventilation valve.
2. The engine partial structure according to claim 1, characterized in that,
the inlet end of the positive crankcase ventilation valve is directed toward an inner wall of the breather chamber.
3. The engine partial structure according to claim 1 or 2, characterized in that,
the positive crankcase ventilation valve is arranged in parallel with the wool type impactor in the horizontal direction.
4. The engine partial structure according to claim 3, characterized in that,
the blowby gas return passage includes a labyrinth passage located on an upstream side of the wool-type impactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321460249.1U CN220168012U (en) | 2023-06-09 | 2023-06-09 | Engine local structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321460249.1U CN220168012U (en) | 2023-06-09 | 2023-06-09 | Engine local structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220168012U true CN220168012U (en) | 2023-12-12 |
Family
ID=89061481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321460249.1U Active CN220168012U (en) | 2023-06-09 | 2023-06-09 | Engine local structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220168012U (en) |
-
2023
- 2023-06-09 CN CN202321460249.1U patent/CN220168012U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |